Re: range() is not the best way to check range?

From: "Dan Bishop" <danb_83@xxxxxxxxx>
Date: 17 Jul 2006 20:09:00 -0700

Leif K-Brooks wrote:

Summercoolness@xxxxxxxxx wrote:

or is there an alternative use of range() or something similar that can
be as fast?

You could use xrange:

leif@ubuntu:~$ python -m timeit -n10000 "1 in range(10000)"
10000 loops, best of 3: 260 usec per loop
leif@ubuntu:~$ python -m timeit -n10000 "1 in xrange(10000)"
10000 loops, best of 3: 0.664 usec per loop

That's only because you're choosing a number that's early in the list.

~$ python -m timeit -n10000 "1 in xrange(10000)"
10000 loops, best of 3: 1.22 usec per loop
~$ python -m timeit -n10000 "9999 in xrange(10000)"
10000 loops, best of 3: 1.24 msec per loop

That's *milliseconds*, not microseconds.

.

References:
- range() is not the best way to check range?
  - From: Summercoolness
- Re: range() is not the best way to check range?
  - From: Leif K-Brooks

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